Labor unions History 21 Labor movement 14 Organizing 10 Employees 9 Working class 6 Employment 5 more ... Stevedores 5 African Americans 4 Foreign workers 4 Hospitals 4 Strikes and lockouts 4 African American labor union members 3 Clerks (Retail trade) 3 Communism 3 Discrimination in employment 3 Immigrants 3 Minorities 3 Social conditions 3 Women 3 Women household employees 3 Collective bargaining 2 Health facilities 2 Labor laws and legislation 2 Labor leaders 2 Precarious employment 2 Training of 2 Transport workers 2 Universities and colleges 2 Arbitration, Industrial 1 less ...